SOLUTION: What is the value of x in the solution to the system if equations. x + 2y + 4z = 12 y + 2z = 8 5y = 10

SOLUTION: What is the value of x in the solution to the system if equations. x + 2y + 4z = 12 y + 2z = 8 5y = 10

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Question 440021: What is the value of x in the solution to the system if equations.
x + 2y + 4z = 12
y + 2z = 8
5y = 10
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
(2)
(3)
There are 3 equations and 3 unknowns, so it's solvable
(2)
(2)
(2)
Substitute this into (1)
(1)
(1)
(1)
and
(3)
(3)
and
(2)
(2)
(2)
(2)
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